A more modular way to combine predefined query into a single transaction

Hello currently I write my query into something like this

export const addUser = (data: InsertUser) => {
  return db.insert(users).values(data).returning();
};


export const getUserByEmail = (email: string) => {
  return db.select().from(users).where(eq(users.email, email));
};

async insertParticipant(userID : number, eventID: number) {
  return db.insert(participants).values({userID,eventID}).returning()
 }

export const addUser = (data: InsertUser) => {
  return db.insert(users).values(data).returning();
};


export const getUserByEmail = (email: string) => {
  return db.select().from(users).where(eq(users.email, email));
};

async insertParticipant(userID : number, eventID: number) {
  return db.insert(participants).values({userID,eventID}).returning()
 }

This function sometimes called separately, but there are times that I wanted to combine those query into a single transaction. What I do right now is creating a whole new transaction query without reusing the query above something like

const res = db.transactions((tx)=>{
  let user : undefined | selectUsers 
  user = await   tx.select().from(users).where(eq(users.email,email)
  if(!user){
      //insert a new user
      user = await tx.insert(users).values({....}).returning()
    }
  
  const join = await tx.insert(participant).values({a: user.ID, b:fk.ID}).returning()
 
    return {
    ...user,
    ...join
  }

return res
})

const res = db.transactions((tx)=>{
  let user : undefined | selectUsers 
  user = await   tx.select().from(users).where(eq(users.email,email)
  if(!user){
      //insert a new user
      user = await tx.insert(users).values({....}).returning()
    }
  
  const join = await tx.insert(participant).values({a: user.ID, b:fk.ID}).returning()
 
    return {
    ...user,
    ...join
  }

return res
})

as you can see it's seems inefficient, since the query is the same with those 3 defined function, is there any way i can utilize it and use it into transaction ? i suspect that i can use a QueryBuilder or something a suggestion would be very much appreciated

2 Replies

rphlmr ⚡•6mo ago

https://drizzle.run/lt295lgldz4avpzwdee7ddhd You will need some inversion of control here

Drizzle Run

Transaction or DB - Drizzle Run

IgnisMurasakiOP•6mo ago

Thankyou very much, it's very helpfull for me. it's really helping me a lot

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Programming

A more modular way to combine predefined query into a single transaction